Central Government Act
Section 65(g) in The Indian Evidence Act, 1872
(g) when the originals consist of numerous accounts or other documents which cannot conveniently be examined in Court and the fact to be proved is the general result of the whole collection. In cases (a), (c) and (d), any secondary evidence of the contents of the document is admissible. In case (b), the written admission is admissible. In case (e) or (f), a certified copy of the document, but no other kind of secondary evidence, is admissible. In case (g), evidence may be given as to the general result of the documents by any person who has examined them, and who is skilled in the examination of such documents.